Re: [PATCH 15/19] drm/i915: HSW cdclk support

[Mika Kahola <mika.kahola@intel.com>]

I tested this patch with the audio in place. With this setup in my HSW
machine I can hear the pink noise played back with DP-HDMI cable
attatched.

speaker-test -c 2 -r 48000 -F S16_LE -t pink --device=plughw:0,7

Cheers,
Mika

On Tue, 2015-04-07 at 14:06 +0530, Sivakumar Thulasimani wrote:
> where can i check this (audio driver) ? since there was no need for them 
> to check CD clock value till now i don't think they will be doing it. 
> also this needs to be changed in Display Audio controller, so not sure 
> if audio driver has access to it in the first place. will be good to 
> confirm this before merging as it will break display audio if it is not 
> programmed.
> 
> if any one has setup this can be confirmed by just switching CD clock 
> after boot and playing an audio file.
> 
> regards,
> Sivakumar
> 
> On 4/7/2015 1:59 PM, Ville Syrjälä wrote:
> > On Tue, Apr 07, 2015 at 12:33:40PM +0530, Sivakumar Thulasimani wrote:
> >> sorry if i am missing something, HSW and BDW requires display audio
> >> controller to be updated with new values once CD clock is modified. how
> >> is this accomplished here ?
> > I'm hoping the audio driver will query the cdclk frequency after every
> > modeset.
> >
> 
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